Shelving unit



FIG. 1 is a left side view of a shelving unit, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top front perspective view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front perspective view thereof; and,

FIG. 7 is a bottom perspective view thereof. 

The ornamental design for a shelving unit, as shown and described. 